[xdebug-general] XDebug increasing usort time

I'm doing a usort() (well, actually, a uasort() if that makes any
difference) on an array of stdObjects with ~10k items, which usually
takes 4.5s, but when XDebug is enabled, it takes a whole 60s. Is there
any reason why it would be increasing the sort time by this high a factor?

I can supply sample code and a JSON-encoded array file which causes this
on PHP 5.3.1 with XDebug 2.1.0RC1 (VC9) if needed.

Thanks,

-- 
Ryan McCue
<http://ryanmccue.info/>